KR960016154A - PCM data compression extension system - Google Patents
PCM data compression extension system Download PDFInfo
- Publication number
- KR960016154A KR960016154A KR1019940026224A KR19940026224A KR960016154A KR 960016154 A KR960016154 A KR 960016154A KR 1019940026224 A KR1019940026224 A KR 1019940026224A KR 19940026224 A KR19940026224 A KR 19940026224A KR 960016154 A KR960016154 A KR 960016154A
- Authority
- KR
- South Korea
- Prior art keywords
- data
- voice
- pcm
- tone
- reproducing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3053—Block-companding PCM systems
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3059—Digital compression and data reduction techniques where the original information is represented by a subset or similar information, e.g. lossy compression
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Electrophonic Musical Instruments (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
본 발명은 피씨엠(PCM) 음색데이타의 압축신장시스템에 관한 것으로, 종래에는 피씨엠방식 사운드 발생회로의 음색데이타는 원래 샘플링했던 16비트 데이타를 그대로 음색샘플링 데이타 메모리에 저장시켜 사용하기 때문에 수백가지에 이르는 음색데이타를 저장하기 위해서는 음색샘플링 데이타 메모리의 크기가 커짐에 따라 피씨엠방식 사운드발생기의 생산간격을 상승시키게 되는 문제점과, 또한 샘플링데이타의 무단복제가 쉽기 때문에 제품고유의 샘플링기술을 보호하기 어려운 문제점이 있었다. 따라서 본 발명은 샘플링데이타 메모리의 사용량을 최대 50%이상 줄일 수 있도록 하여 비용절감의 효과를 가져오도록 함과 아울러 압축된 데이타를 다른 사람이 그대로 사용할 수 없음에 따라 정보유출을 방지하도록 한다.The present invention relates to a compression extension system of PCM (PCM) sound data. Conventionally, the sound data of the PCM sound generation circuit uses the 16-bit data originally sampled in the tone sampling data memory. In order to store the tone data up to the size, the size of the voice sampling data memory increases, which increases the production interval of the PC-type sound generator, and also protects the unique sampling technology because the sampling data is easily copied. There was a difficult problem. Therefore, the present invention can reduce the usage of sampling data memory by up to 50% or more, thereby reducing the cost and preventing information leakage as others cannot use the compressed data as it is.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제3도는 본 발명의 피씨엠(PCM) 데이타의 압축신장 시스템 구성도.3 is a diagram illustrating a system for compressing and extending PCM data of the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR94026224A KR970011721B1 (en) | 1994-10-13 | 1994-10-13 | Compression and system of pcm data |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR94026224A KR970011721B1 (en) | 1994-10-13 | 1994-10-13 | Compression and system of pcm data |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960016154A true KR960016154A (en) | 1996-05-22 |
KR970011721B1 KR970011721B1 (en) | 1997-07-14 |
Family
ID=19395043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR94026224A KR970011721B1 (en) | 1994-10-13 | 1994-10-13 | Compression and system of pcm data |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970011721B1 (en) |
-
1994
- 1994-10-13 KR KR94026224A patent/KR970011721B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR970011721B1 (en) | 1997-07-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20051021 Year of fee payment: 9 |
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LAPS | Lapse due to unpaid annual fee |